* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
  overscroll-behavior: none;
}

#game {
  display: block;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  touch-action: none;
  outline: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}